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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6541862635

Certificate GIA 6541862635

Diamond specifications and retailer prices

From HK$25,879 HKD
As of November 6, 2026
Save HK$28,432 HKD (52%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$54,311 HKD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6541862635. Listed at 22 retailers as of November 6, 2026, with prices from HK$25,879 to HK$54,311, a HK$28,432 spread on the same certified stone. Wholesale Diamonds Direct lists it at HK$54,311. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.9°
OriginNatural
Grading LabGIA
CertificateGIA 6541862635
Dimensions7.56 × 6.03 × 4.16 mm
L/W Ratio1.25
Top View
7.56 mm6.03 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541862635
Side View
Table 64.0%CrownGirdle: STK-THKPavilion 36.9°Culet: NoneDepth 68.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$34,391 HKD|Low: HK$25,879 HKD|High: HK$57,864 HKD|Avg: HK$36,062 HKD|-6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Wholesale Diamonds Direct
November 7, 2026
Retailer 18HK$25,879 HKD
Retailer 6HK$29,335 HKD
Retailer 17HK$29,774 HKD
Retailer 8HK$30,997 HKD
Retailer 10HK$31,005 HKD
Retailer 2HK$31,263 HKD
Retailer 3HK$31,506 HKD
Retailer 12HK$31,961 HKD
Retailer 5HK$32,063 HKD
Retailer 19HK$32,133 HKD
Retailer 14HK$32,611 HKD
Retailer 11HK$33,544 HKD
Retailer 4HK$34,179 HKD
Retailer 1HK$34,391 HKD
Retailer 7HK$34,657 HKD
Retailer 9HK$36,013 HKD
Retailer 13HK$38,105 HKD
Retailer 15HK$41,342 HKD
Retailer 16HK$53,796 HKD
Wholesale Diamonds DirectHK$54,311 HKD

20 data points across 20 retailers

22 retailersHK$25,879 HKD to HK$54,311 HKD

A
Cheapest Retailer
-
HK$25,879 HKD
A
Retailer 2
-
HK$29,335 HKD
View
A
Retailer 3
-
HK$29,774 HKD
View
Retailer 4
-
HK$30,997 HKD
View
Price last confirmed 10 days ago
Retailer 5
-
HK$31,005 HKD
View
Price last confirmed 9 days ago
A
Retailer 6
-
HK$31,263 HKD
View
Final sale: no returns
A
Retailer 7
-
HK$31,506 HKD
View
A
Retailer 8
-
HK$31,961 HKD
View
A
Retailer 9
-
HK$32,063 HKD
View
A
Retailer 10
-
HK$32,133 HKD
View
A
Retailer 11
-
HK$32,611 HKD
View
Retailer 12
-
HK$33,544 HKD
View
Price last confirmed 8 days ago
A
Retailer 13
-
HK$34,179 HKD
View
A
Retailer 14
-
HK$34,391 HKD
View
Retailer 15
-
HK$34,657 HKD
View
Price last confirmed 8 days ago
Retailer 16
-
HK$36,013 HKD
View
Price last confirmed 18 days ago
B+
Retailer 17
-
HK$37,839 HKD
View
Retailer 18
-
HK$37,957 HKD
View
Price last confirmed 29 days ago
B+
Retailer 19
-
HK$38,105 HKD
View
B+
Retailer 20
-
HK$41,342 HKD
View
B+
Retailer 21
-
HK$53,796 HKD
View
Most Expensive
B
Wholesale Diamonds Direct
626030070 · Nov 6
HK$54,311 HKD
$6,930 USD
View
21 more retailers have this diamond
Prices start from HK$25,879 HKDSave up to HK$28,432 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Cushion
HK$25,879 HKD